🌐EnglishEnglishEspañolItalianoРусскийالعربيةفارسیEntityQ7831989· pop 9Category:Mathematicians from Austria-HungaryWikimedia categoryAvailable in 8 languagesEspañolРусскийItalianoالعربيةBelarusianCatalanفارسیvia Wikidata sitelinks · CC0